CN210827669U

CN210827669U - Utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource

Info

Publication number: CN210827669U
Application number: CN201921545803.XU
Authority: CN
Inventors: 田婵娟; 陈学群; 李福林; 刘彩虹; 辛光明; 李成光
Original assignee: Water Resources Research Institute of Shandong Province
Current assignee: Water Resources Research Institute of Shandong Province
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-06-23
Anticipated expiration: 2029-09-18

Abstract

The utility model relates to an utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource, its characterized in that: the method comprises the following steps of excavating a well groove on the ground, arranging a water collecting gallery type recharging filter tank on the side of the well groove, arranging a water collecting gallery type recharging filter in the water collecting gallery type recharging filter tank, arranging a high-permeability filter element on the water collecting gallery type recharging filter, connecting one end of the water collecting gallery type recharging filter with a flow guide pipe through a flange plate, arranging a recharging well in the well groove, arranging a water filtering pipe in the recharging well, arranging a recharging well cover at the upper end of the water filtering pipe, and communicating a flow guide port of the flow guide pipe with the water filtering pipe. The utility model discloses a recharge device is relatively independent with filter equipment to recharge filter equipment has the function of washing, back flush and renew cartridge.

Description

Utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource

Technical Field

The utility model relates to an utilize groundwater recharge system of rainfall flood resource recharge mainly is a device that carries out groundwater recharge after filtering through corridor formula recharge filter equipment catchments, belongs to hydrogeology, groundwater recharge technical field.

Background

In recent years, with the continuous development of social economy, the demand of people for high-quality underground water resources is increased sharply. The problems of ground subsidence, sea (salt) water invasion and the like caused by excessive exploitation of underground water are more and more concerned and valued by society, and a series of underground water recharge supply measures are successively provided. Groundwater recharge is a mode of artificially increasing groundwater recharge quantity by injecting surface water sources which are uneven in time distribution, lack of water storage space, scattered and unstable in water supply into an underground aquifer by using engineering measures. At present, the measures for recharging underground water are mainly divided into two measures. One is an indirect ground surface recharge measure, which is usually expressed by establishing a seepage pool, a recharge ditch, a river-blocking gate dam and the like in a recharge area to carry out indirect groundwater recharge; the other is a groundwater recharge measure for building a groundwater seepage interception wall or directly recharging and supplying a groundwater aquifer by using a seepage well. And measures such as constructing a seepage pool, a river dam, a groundwater interception wall and the like are adopted for groundwater recharge, so that the investment is large and the cost is high. Although the cost is low and the effect is obvious when a recharging well is built for recharging underground water, the guarantee of a recharging water source, the blockage of the recharging well, the service life of the recharging well, the manual recharging cost and the like are problems to be solved urgently in the field of underground water recharging.

Disclosure of Invention

The utility model aims to solve the technical problem that a corridor formula groundwater recharge device that catchments that utilizes rainfall flood resource is provided, through utilizing rainfall flood resource, with rainwater or river course water entering get into corridor formula recharge filter after filter material filter layer, recharge ware filter core filter, and then get into the recharge well and accomplish groundwater recharge supply. The utility model discloses a do not directly connect the water source recharge, but recharge again after recharging earlier stage through recharging filter equipment filtration. Realize the utility model discloses the technical scheme who takes is: the utility model provides an utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource, this recharge system device includes corridor formula recharge filter equipment and recharge well device, its characterized in that: digging a well groove on the ground, building concrete bricks around the well groove, arranging a sealing well cover on the concrete bricks, arranging a water collecting gallery type recharging filter tank at the side of the well groove, arranging a water collecting gallery type recharging filter in the water collecting gallery type recharging filter tank, arranging a high-permeability filter element on the water collecting gallery type recharging filter, arranging low-permeability filter elements below and on the side surface of the water collecting gallery type recharging filter, respectively arranging filter material filter layers on the upper surface of the high-permeability filter element and on the bottom surface and the side surface of the low-permeability filter element, arranging a ground filter material filter layer on the uppermost surface of the high-permeability filter element, arranging a concrete brick at the end part of the ground filter material filter layer, connecting one end of the water collecting gallery type recharging filter with a flow guide pipe through a flange, additionally arranging a sealing gasket between the flanges, and arranging a flow and a control valve on the flow guide pipe, a recharge well is arranged in the well groove, filter materials are arranged around the recharge well, a filter pipe is arranged in the recharge well, a water level and water quality sensor is arranged in the filter pipe, and a flow guide port of the flow guide pipe is communicated with the filter pipe.

The water collecting gallery type underground water recharging system device utilizing the rainfall flood resource mainly comprises a filter material filtering layer, a gallery type recharging filter, a filter element, a metering and controlling device, a recharging well device, an online monitoring device and the like. The water collecting gallery type underground water recharging system utilizing the rainfall flood resources can increase the utilization rate of the rainfall flood resources and can reduce the investment cost of manual recharging. The system has a recharge filter device, thereby reducing the risk of blockage of particles of the recharge well. In addition, the recharging device and the filtering device of the system are relatively independent, and the recharging filtering device has the functions of washing, backwashing and filter element replacement, so that the service life of the recharging device is greatly prolonged to a certain extent, and the recharging efficiency is improved.

The utility model has the advantages of it is following:

the recharging system device is provided with a water collecting gallery type recharging filter device, rain flood resources can enter the recharging well for recharging after three filtering procedures, and the risk of particle blockage of the recharging well is reduced while the rain flood resources are efficiently utilized.

The recharging system device has certain controllability and adjustability, can selectively recharge and utilize rainfall flood resources through the control valve at the water outlet end of the water collecting gallery type recharging filter, and does not influence the normal ground surface function.

And thirdly, the water collecting gallery type recharging filtering device of the recharging system device can perform the functions of washing, backwashing and excavation to replace the filter element, so that the service life of the whole recharging device is prolonged to a great extent.

And fourthly, the water collecting gallery type recharging filtering device of the recharging system device can buffer the velocity of recharging water flow after water source filtering, and a series of problems of gas phase blockage of a recharging well and the like caused by long-time large-flow recharging are avoided to a certain extent.

Fifthly, the recharge system device can directly utilize rain flood resources to recharge underground water, thereby greatly saving the cost of recharging water sources.

Sixthly, the recharge system device is provided with a gate control system and a water level and water quality online monitoring system, so that recharge can be controlled at any time while the dynamic change of underground water is monitored in real time, the recharge system ensures the recharge intelligence, and meanwhile, the recharge water source water quality is guaranteed.

And seventhly, the recharging filter device of the recharging system device is relatively independent from the recharging well device, rainwater flood resources can be used for selecting filtration recharging in a rich water period, the rainwater flood resources are exploited for later use in a dry water period, the recharging filter device is flushed and backwashed in spring and autumn, and meanwhile, the normal exploitation and use of the recharging well cannot be delayed.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a schematic plan view of the present invention;

FIG. 3 is a schematic cross-sectional view of the circular recharge filter device of the present invention;

fig. 4 is a schematic sectional view of the triangular recharge filter device of the present invention.

In the figure, 1, ground, 2, concrete bricks, 3, a sealing well cover, 4, a recharging well cover, 5, a flow meter, 6, a control valve, 7, a water level and quality sensor, 8, a recharging well, 9, filter materials, 10, a well water level, 11, a filter pipe (with a filter screen), 12, a water flow direction, 13, a sealing gasket, 14, a flange plate, 15, a ground filter material filter layer (with the particle size of 2-3 cm), 16, a filter material filter layer (with the particle size of 0.5-1 cm), 17, rainfall (or river inflow), 18, a water collection gallery type recharging filter, 19, a low-permeability filter element, 20 and a high-permeability filter element,

21. 22 parts of water level in the recharging filter, 23 parts of a water collecting gallery type recharging filter tank, 24 parts of a flow guide pipe, 24 parts of a flow guide opening, 25 parts of a well tank.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The specific filtration-recharge embodiment is as follows:

as shown in the figure, the utility model provides an utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource, this recharge system device includes corridor formula recharge filter equipment and recharge well device, its characterized in that: a well groove 25 is excavated on the ground 1, concrete bricks 2 are built around the well groove 25, a sealing well cover 3 is arranged on the concrete bricks 2, a water collecting gallery type recharging filter tank 22 is arranged on the side of the well groove 25, a water collecting gallery type recharging filter 18 is arranged in the water collecting gallery type recharging filter tank 22, a high-permeability filter element 20 is arranged on the water collecting gallery type recharging filter 18, low-permeability filter elements 19 are arranged on the lower surface and the side surface of the water collecting gallery type recharging filter 18, filter layers 16 are respectively arranged on the upper surface of the high-permeability filter element 20 and the bottom surface and the side surface of the low-permeability filter element 19, a ground filter material filter layer 15 is arranged on the uppermost surface of the high-permeability filter element 20, the concrete bricks 2 are arranged on the end part of the ground filter material filter layer 15, one end of the water collecting gallery type recharging filter 18 is connected with a draft tube 23 through a flange 14, a sealing gasket 13 is additionally arranged between the flanges 14, set up flow meter 5 and control valve 6 on the honeycomb duct 23, set up recharging well 8 in the shaft groove 25, be equipped with filter material 9 around recharging well 8, set up strainer 11 in recharging well 8, set up water level water quality sensor 7 in the strainer 11, the upper end of strainer 11 sets up recharging well lid 4, and the water conservancy diversion mouth 24 and the strainer 11 of honeycomb duct 23 communicate together.

The utility model discloses a rainfall or river course incoming water 17 at first carries out preliminary filtration in earlier stage through the ground filter material filter layer 15 that the particle diameter is 2-3cm, this filtration step filters earlier stage rainwater or the silt that the particle diameter is great and separates the fender, this ground filter material filter layer 15 and external direct contact need cooperate thin cement thick liquid to mix to paint, play the effect of fixing and protection, can not influence its filtration infiltration ability simultaneously; secondly, the water source after primary filtration is subjected to secondary filtration through a filter material filtering layer 16 with the particle size of 0.5-1cm, and part of silt and impurities in the water source are filtered; and thirdly, the water source is filtered for three times by the filter element 20 and then reaches the water collecting gallery type recharging filter 18, the water outlet end of the water collecting gallery filter 18 is connected with the recharging well 8 through the guide pipe 23, and the water outlet end of the recharging filter is lower than the tail end of the recharging filter in the construction process, so that a certain terrain height difference exists between the water outlet end and the recharging well 8, and the water flow in the recharging filter 18 can smoothly enter the recharging well 8 through the guide pipe 23.

A control valve 6 and a flow meter 5 are arranged between the water inlet front end of the recharging well 8 and the water outlet end of the recharging filter. The control valve 6 is used for controlling the recharging flow, and can be closed at any time when the water quality of the river channel water is not up to standard, so that the water source which is not up to standard is prohibited from recharging polluted underground water. The flowmeter 5 records the recharging water quantity and monitors the recharging flow in real time in the filtering recharging process. In addition, a water level and water quality sensor 7 is arranged in the well, and effective online transmission monitoring is carried out on the water level and water quality change in the recharge well. The inner edge of the recharging wellhead needs to be subjected to anti-seepage treatment so as to prevent the damage of devices in the well due to seepage measurement in the filtering and recharging process.

In the recharging implementation process, the maximum filtration efficiency is considered, and two specifications of recharging filters are designed, namely a circular recharging filter and an inverted triangular recharging filter. In order to solve the problem that water flow permeates into the filter material filtering layer through the filter element due to the self-weight action of the water flow after entering the recharging filter, the permeability coefficient of the filter element 19 of the filter is lower than that of the filter element 20 of the filter; in view of maximizing the recharge efficiency, the diversion port 24 at the water inlet end of the recharge filter should be positioned close to the lower end of the circular recharge filter so that the filtered water can enter the recharge well 8 relatively quickly.

When the recharging filter filters a water source, the water source is primarily filtered through the filter material filtering layer 15, and the filter material filtering layer 15 filters and separates early-stage rainwater or silt with larger particle size; the water source after primary filtration is filtered for the second time by a filter material filter layer 16, and the filter material filter layer 16 filters part of silt and impurities in the water source; in the early stage of filtration, a water source is filtered by a filter material filtering layer and mainly enters the recharge filter 18 through the filter element 20 with relatively high permeability coefficient on the upper layer of the filter, and in the later stage of filtration, when the water level in the filter material filtering layer is gradually increased, water flow enters the recharge filter through the filter elements around the recharge filter by utilizing the pressure of a water head, at the moment, the filtering area is the largest, and the filtering recharge efficiency is the largest. Finally, the water in the filter and the filter material filtering layer of the recharging filter is saturated, and the redundant water overflows out of the water collecting gallery type recharging filter tank 22. When rainfall (or river inflow) stops, the water at the bottom layer in the water collecting gallery type recharging filter tank 22 can be slowly dissolved in a mode of evaporating or permeating into the stratum, and the phenomenon that dead water exists in the water collecting gallery type recharging filter can not be caused. In addition, the material of the filter element of the recharge filter can be selected automatically according to the actual condition of the recharge water source, and the filter element which can realize physical filtration and chemical filtration is selected for water source filtration.

In order to solve the problem of siltation and blockage caused by long-time use of the gallery type recharging filter device, firstly, a high-pressure water gun can be used for flushing the gallery type recharging filter device through an upper filter material filter layer; secondly, reserving a back flushing port at the water outlet end (or the front end of a recharging well) of the gallery type recharging filter, and installing flushing equipment to carry out back flushing on the gallery type recharging filter device; and thirdly, digging a gallery type recharging filter tank, and directly replacing a filter element of the recharging device.

The utility model discloses a filtration process of recharging is: the water flow penetrates into the recharge filter through the filter material filtering layer and the filter element of the filter, and impurities are attached to the outer wall of the filter element; the water flow direction of the recharge filter in the backwashing process is opposite to that of the recharge filtering process, the water flow washes the filter material filtering layer through the recharge filter, and impurities attached to the outer wall of the filter element of the filter are washed by the water flow and fall off, so that the backwashing function is realized.

Claims

1. The utility model provides an utilize corridor formula groundwater recharge system device that catchments of rainfall flood resource, this recharge system device includes corridor formula recharge filter equipment and recharge well device, its characterized in that: a well groove (25) is excavated on the ground (1), concrete bricks (2) are built around the well groove (25), a sealing well cover (3) is arranged on the concrete bricks (2), a water collecting gallery type recharging filter tank (22) is arranged on the side of the well groove (25), a water collecting gallery type recharging filter (18) is arranged in the water collecting gallery type recharging filter tank (22), a high-permeability filter element (20) is arranged on the water collecting gallery type recharging filter (18), low-permeability filter elements (19) are arranged on the lower surface and the side surface of the water collecting gallery type recharging filter (18), filter material filter layers (16) are respectively arranged on the upper surface of the high-permeability filter element (20) and the bottom surface and the side surface of the low-permeability filter element (19), a ground filter element (15) is arranged on the uppermost surface of the high-permeability filter (20), and the concrete bricks (2) are arranged at the end part of the ground filter element (15), one end of the water collecting gallery type recharge filter (18) is connected with the drainage pipe (23) through the flange plate (14), the recharge well (8) is arranged in the well groove (25), filter materials (9) are arranged around the recharge well (8), the water filter pipe (11) is arranged in the recharge well (8), the upper end of the water filter pipe (11) is provided with the recharge well cover (4), and the flow guide opening (24) of the drainage pipe (23) is communicated with the water filter pipe (11).

2. The system installation of a catchment corridor-like groundwater recharge system using rainfall flood resources according to claim 1, wherein: a sealing gasket (13) is additionally arranged between the flange plates (14), and a flow meter (5) and a control valve (6) are arranged on the guide pipe (23).

3. The system installation of a catchment corridor-like groundwater recharge system using rainfall flood resources according to claim 1, wherein: a water level and water quality sensor (7) is arranged in the strainer (11).

4. The system installation of a catchment corridor-like groundwater recharge system using rainfall flood resources according to claim 1, wherein: the grain size of the ground filter material filtering layer (15) is 2-3cm, and the grain size of the filter material filtering layer (16) is 0.5-1 cm.